Addressing threats to health care's core values, especially those stemming from concentration and abuse of power. Advocating for accountability, integrity, transparency, honesty and ethics in leadership and governance of health care.

Tuesday, March 06, 2012

Another Health IT Mythbuster: Doctors order more X-rays, not fewer, with computer access

This piece is in the Washington Post about a just-released piece in Health Affairs (at this link) by Danny McCormick, David H. Bor, Stephanie Woolhandler and David U. Himmelstein of Harvard Medical School.

Policy-based incentives for health care providers to adopt health information technology are predicated on the assumption that, among other things, electronic access to patient test results and medical records will reduce diagnostic testing and save money.

To test the generalizability of findings that support this assumption, we analyzed the records of 28,741 patient visits to a nationally representative sample of 1,187 office-based physicians in 2008. Physicians’ access to computerized imaging results (sometimes, but not necessarily, through an electronic health record) was associated with a 40–70 percent greater likelihood of an imaging test being ordered. The electronic availability of lab test results was also associated with ordering of additional blood tests.
The availability of an electronic health record in itself had no apparent impact on ordering; the electronic access to test results appears to have been the key. These findings raise the possibility that, as currently implemented, electronic access does not decrease test ordering in the office setting and may even increase it, possibly because of system features that are enticements to ordering. We conclude that use of these health information technologies, whatever their other benefits, remains unproven as an effective cost-control strategy with respect to reducing the ordering of unnecessary tests.

In the debate over the high cost of health care, federal policymakers have always claimed that one way to cut costs is for doctors to use electronic medical records and other information technology. Doing so, they say, avoids duplication and saves money.
But new research suggests that may not be the case.

Doctors who have easy computer access to results of X-rays, CT scans and MRIs are 40 to 70 percent more likely to order those kinds of tests than doctors without electronic access, according to a study to be published in the March issue of the journal Health Affairs.

This is not surprising to me. Click a button, order an test, click a button, get the results. What could be easier?
What the pundits failed (and continually fail) to take into account is the social context of health IT. It is not used on a robotic assembly line. There are incentives, both proper and perverse (e.g., "defensive medicine", profits, patient demands) that figure into how any IT will "play out" in healthcare.
Making the blanket statement that "IT in healthcare will save money" without solid, sustained evidence (as opposed to the anecdotal evidence that now exists), while simultaneously ignoring contrary evidence is simply promoting an industry-created meme, a.k.a. wishful thinking.

“On average, this is comparing doctors who had electronic medical records and those who didn’t,” said lead author Danny McCormick, a physician and assistant professor of medicine at Harvard Medical School.
Researchers say the findings challenge a key premise of the nation’s multibillion-dollar effort to promote the widespread adoption of health information technology. “This should give pause to those making the argument,” McCormick said. Instead of saving money, that effort could drive costs higher, he said.
For the study, researchers at the Cambridge Health Alliance, a health system in Cambridge, Mass., and the City University of New York analyzed data from a 2008 federal government survey. The data included information collected from 28,741 patient visits to 1,187 office-based doctors. The information included the type of doctor, their office computerization and the tests ordered at each visit. About half of the doctors’ offices surveyed had computerized access to results of X-rays and other imaging tests.
Researchers found that doctors who did not have computerized access ordered imaging tests in 12.9 percent of visits, while doctors with electronic access ordered imaging in 18 percent of visits, a 40 percent greater likelihood. Doctors with computerized access were even more likely — about 70 percent more likely — to order advanced imaging tests, such as PET scans, which experts said are most commonly used to detect cancer, heart problems, brain disorders and other central nervous system disorders.
The study found the results hold true even after taking into account other factors, such as patient demographics, doctor specialty and physician self-referral.

Unfortunately, nothing up to and including HIT-related patient deaths will give pause to health IT pundits pushing national rollout. They have too much skin in the game in the health IT bubble, psychologically (link) and financially.

... Researchers were not able to determine why physicians ordered the imaging tests, or whether in those cases, physicians had looked at patients’ prior chest X-rays. Nor were they able to assess whether the increased imaging helped or harmed patients.

That needs to be followed up upon, obviously. Will it? Probably not.

At some flagship hospitals with customized health information technology systems, for example, doctors get specific feedback about diagnostic tests that can result in ordering fewer tests.

Note the word "can." (After decades there is no rigorous, unopposed proof, yet we are embarking on a national rollout with penalties for non-adopters?) This rationalization is both the "it will be better in version 2.0" and wishful thinking combined.

Michael Furukawa, a health economist in the Office of the National Coordinator for Health Information Technology, the administration’s health IT czar, said the researchers’ focus was not deep enough to support the study’s conclusions.
“The data are sound, the methods are appropriate, but the focus is limited,” he said. “They only looked at one piece of health IT.”

"But the focus is limited?"

So what?

That was all they intended to look at, and the result was concerning. Moving the goalposts is not a valid refutation of research.

On the other hand, coming from a political office that clearly does not understand how to conduct qualitative research and creates political promotion pieces masquerading as "research", such a statement is not surprising. See "ONC: "The Benefits Of Health Information Technology: A Review Of The Recent Literature Shows Predominantly Positive Results" at this link, where essential research methodologies were thrown under the bus for publication in Health Affairs.

At least the deviations from rigorous research methodologies were admitted:

“... Our findings must be qualified by two important limitations: the question of publication bias [e.g., bias in evidence selection - ed.], and the fact that we implicitly gave equal weight to all studies regardless of study design or sample size.”

Unfortunately, the media, politicians, financial decisionmakers and others are likely not to really comprehend, in-depth, the full significance of that sentence.

I can only imagine the reaction to such an excuse made by pharma for the mainstreaming of a risk-prone drug.

I personally take with the greatest of skepticism anything coming from ONC, an increasingly politicized government office in my observation.

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